Improvement in sewing-machines



(134.) I 3 Sheets--Sheet 1'.

JEROME SECOR.

Improvement in Sewing Machines.

NO. 121965. a I Patented De;c.19. 1871.

YiMwasas:

JEROME B. sacon.

Improvement in Sewing Machines;

N0. 121,965. Pa tentedDec.19,18 71.

PATENT OFFICE.

JEROME B. SEOOR, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 121,965, dated December 19, 1871.

To all whom it may concern:

Be it known that I, JEROME B. SECOR, of Ohicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Sewing-Machines, of which the following is a specification, reference being had to the accompanying drawing.

The nature of my invention consists in the arran gement of the camAthat drives the needle-bar in a box, E, above thetable of the sewing-machine,

' which enables me to drive the feed and shuttle from the same shaft that carries the cam, and arrange them all in a compact simple form above the table, and in the combination of the roller made with a raw-hide ring on a sleeve, with the cam-wheel A, and also in the combination and arrangement of the feeding device at the frontof the machine, as hereinafter fully described.

Figure 1, Plate 1, represents a side elevation of my machine; Fig. 2, Plate 2, afront elevation. Fig. 3, Plate 3, represents a side elevation of the feed-bar and its attachments, enlarged; Fig. 4, a top or plan view of the same, with the crank and shuttle-carrier attached. Fig. 5 is a side elevation of the crank and shuttle-carrier detached. Fig. 6 is a detached view of the cam that drives the needle-bar.

A is the frame or table of the machine. B is the treadle. O C are the ordinary band-wheels for driving the machine. D is a shaft located above the table. E is a boX or case inclosing the camwheel A. The cam-wheel is rigidly attached to the shaft D, and is revolved with it. F is a roller with a raw-hide shell, S, on a steel sleeve, S which turns loosely on the end of the pin or stud S Fig. (i. The stud S is attached to the lower end of the needle-bar carrier S (shown on Fig. l) by passing through it, and a nut, S, being screwed on its other end. S is a slot in the box or case E for the rod S to play back and forth in as the cam-wheel revolves, and gives the proper motion to the arm or needle-bar carrier S, which is pivoted to the gooseneck at S There are two cams, e and e, on the front end of the shaft D for operating the feed-bars, as hereafter described, and C is a crank rigidly attached to the shaft, and

revolved by it. C is a pitman attached by ordi nary wrist-pins to the crank O, and also to the bar 0 which is attached to the shuttle-carrier C". By the revolution of the shaft D the crank G is turned, and the shuttle operated so as to make the usual motions. l is a link or slotted bar pivoted to the machine at l. l is the feed-bar, and is pivoted at one end to the pivoted link lat 1 while the other end rests on the cam e, by which it secures a vertical motion as the cam revolves. l is a bar, one end of which is attached to the link I, as shown by the screw Z while the other end passes around the cam e, which causes it to revolve the link I and give the lateral or horizontal motion to the feed-bar L By moving Z up or down in the link I the feed of the machine is varied and regulated. l is a thumb-piece by which the operator moves the connecting-rod l up or down in the link 1 to regulate the feed.

The operative parts of the machine are all placed together on the front of the machine, and are very simple and easily managed.

Having described the construction and operation of my invention, what I claim, and desire to secure by Letters Patent, is-

1. The cam-wheel A, shaft D, and inclosingcase E, arranged above the sole-plate of the machine, the shaft D carrying the cams e and e, and combined with and operating the feed-bar l and connecting-rod 6, all substantially as and for the purposes set forth.

2. The needle-actuating arm S its roller F, composed of the shell S and sleeve 8, in combination with the cam-wheel A and slotted covering-case E, all constructed and arranged substantially as and for the purposes described.

3. The shaft D, the cams e and e, the feed-bar 1 the slotted link 1, and the connecting-rod l and screw 1 when all are constructed and arranged in a sewing-machine, as and for the purposes specified.

JEROME B. SEOOR.

Witnesses:

HEINR. T. BRUNS, FRANCIS F. WARNER. 

